Bacteria, viruses, and fungi can thrive in warm places at the gym, such as locker rooms and sweaty gym equipment. To prevent skin infections, the American Academy of Dermatology recommends the following: wear loose-fitting, moisture-wicking clothing; always wear shoes or flip flops in the locker room, around pools, and in the shower; keep any cuts clean and covered; disinfect equipment before and after use; wash hands after working out; shower soon after exercising; and dress in clean clothes. American Academy of Dermatology, January 2019